Physics questions
20027 published questions with worked solutions.
- The magnetic moment of an electron (e) revolving in an orbit around nucleus with an orbital angular momentum is given by :
- A wire of length L and radius r is clamped rigidly at one end. When the other end of the wire is pulled by a force F, its length...
- A unit scale is to be prepared whose length does not change with temperature and remains 20 cm, using a bimetallic strip made of...
- An observer is riding on a bicycle and moving towards a hill at 18 kmh^ -1 . He hears a sound from a source at some distance...
- The volume charge density of a sphere of radius 6 m is 2 C cm^ -3 . The number of lines of force per unit surface area coming out...
- Eight copper wire of length and diameter d are joined in parallel to form a single composite conductor of resistance R. If a...
- The energy band gap of semiconducting material to produce violet (wavelength = 4000 Å) LED is _____ eV. (Round off to the nearest...Not in JEE Advanced syllabus
- Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Two identical...
- Two buses P and Q start from a point at the same time and move in a straight line and their positions are represented by X_P(t) =...
- A disc with a flat small bottom beaker placed on it at a distance R from its center is revolving about an axis passing through...
- A solid metallic cube having total surface area 24 m^ 2 is uniformly heated. If its temperature is increased by 10°C, calculate...
- A copper block of mass 5.0 kg is heated to a temperature of 500°C and is placed on a large ice block. What is the maximum amount...
- The ratio of specific heats (C_P/C_V) in terms of degree of freedom (f) is given by :
- For a particle in uniform circular motion, the acceleration a at any point P(R, ) on the circular path of radius R is (when is...
- Given below are two statements: Statement-I : Susceptibilities of paramagnetic and ferromagnetic substances increase with...Not in JEE Advanced syllabus
- A long solenoid carrying a current produces a magnetic field B along its axis. If the current is doubled and the number of turns...
- A sinusoidal voltage V(t) = 210 sin 3000t volt is applied to a series LCR circuit in which L = 10 mH, C = 25 F and R = 100 . The...
- The electromagnetic waves travel in a medium at a speed of 2.0 10^ 8 m/s. The relative permeability of the medium is 1.0. The...
- The interference pattern is obtained with two coherent light sources of intensity ratio 4 : 1. And the ratio (I_max +...
- A light whose electric field vectors are completely removed by using a good polaroid, allowed to incident on the surface of the...